When an emission-related fault occurs, certain vehicle conditions are
recorded by the on-board computer. This information is referred to as
freeze frame data. View Freeze Data is a snapshot of the operating
conditions at the time of an emission-related fault.
if DTCs were erased, View Freeze Data may not be stored in vehicle
memory
Select [View Freeze Frame], the screen will display the interface as shown
Use the UP/DOWN scroll button for more PIDs if an or arrow appears on
the screen. Press EXIT to return to Diagnostic Menu.
I/M refers to Inspection and Maintenance, that is legislated by
Government to meet federal clean-air standards. I/M Readiness indicates
whether or not the varous emissions-related systems on the vehicle are
operating properly and are ready for Inspection and Maintenance testing.
The purpose of the I/M Readiness Monitor Status is to indicate which of
the vehicle's Monitors have run and completed their diagnosis and testing
(as described in 2.5), and which ones have not yet run and completed
testing and diagnosis of their designated sections of the vehicle's
The I/M Readiness Monitor Status function also can be used (after repair
of a fault has been performed) to confirm that the repair has
performed correctly, and/or to check for Monitor Run Status.
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